/Engine/Plugins/Runtime/GeometryCache/Source/GeometryCache/Classes/GeometryCacheCodecBase.h
An instance of this struct is kept resident for all chuncks only the BulkData member may not be loaded yet. Other info is permanently available.
struct FStreamedGeometryCacheChunk
FByteBulkData
BulkData
Bulk data if stored in the package.
int32
DataSize
Size of the chunk of data in bytes
float
FirstFrame
Frame index of the earliest frame stored in this block
float
LastFrame
End frame index of the interval this chunk contains data for.